Method of reconditioning shingled roofs



Sept. 5, 1939. H. w. HUDSON METHOD OF RECONDITIONING SHINGLED ROOFS Filed Nov. 25, 1938 2 Sheets-Sheet l Sept. 5, 1939. H. w. HUDSON METHOD OF I RECONDITIONING SHINCTLED ROOFS 2 Sheets-Sheet 2 Filed Nov. 25, 1938 Patented Sept. 5, 1939 METHOD RECONDITIONING SHINGLED ROOFS Herbert W. Hudson, Columbus, Ohio Application November 25, 1938, Serial No. 242,149

9 Claims. (01. 108-6) This invention relates to the method of reconditioning shingle roofs set forth in the copending application Serial No. 194,261 filed.

March 7, 1938. In the above mentioned application, the method set forth includes the steps of applying a coating of a bituminous compound to the exposed surfaces of the outer layer of shingles and'forcibly embedding a layer of granulated mineral matter in the coating while it is in a tacky state.

In carrying out the above method, it has been found that frequently the side edges of the shingles do not become perfectly sealed and moisture is permitted to enter thereunder.

When a gles to the roof.

The primary object of this invention resides in rendering a roof which has been or is to be reconditioned by the above method, waterproof by providing means to prevent the retention and accumulation of moisture in the manner above set forth.

A further object resides in positioning a spacer between the lower free ends of the exposed portions of the shingles" and the under layers to provide reduced openings at the lower edges of the shingles whereby moisture entrained thereunder will be permitted to escape naturally and run off the roof in the usual manner.

In the drawings:

Fig. 1 is a perspective view of a portion of a shingle roof;

Fig. 2 is a vertical sectional view taken through the roof shown in Fig. 1 and showing the application of spacers between the lower edge of the outer layer of shingles and the layer beneath;

Fig. 3 is an enlarged perspective view of the shingles with the spacers in applied position;

Fig. 4 is a detail sectional view taken on the plane indicated by the line IV-IV of Fig. 2;

Fig. 5 is a vertical sectional view'showing the shingles after a layer of bituminous compound has been applied;

Fig. 6 illustrates the step of applying granularmineral matter to the bituminous coating;

Fig. 7 shows a modified form of method wherein the openings at the lower edges of the shingles are formed after the roof has been coated with 5 the bituminous compound and mineral particles.

In carrying out the method, the roof is preferably swept with a broom or other device to remove loose dirt. Then the lower edges of the outer layer of shingles I are raised and small fiat disks 10 2 formed of some compressible material such as rubber or cork are inserted between the shingles of the outer layer and the inner layer. These disks are preferably positioned at the center of the lower edge of the shingles and serve to pro- 1 vide a space at the lower edge through which moisture entrained beneath the shingle may escape. Usually, when applying shingles, flat headed nails 3 are forced through the shingles and into the framework 4 of the roof. Sometimes the' nails are positioned as shown in Fig. 2 immediately above the lower edge of the shingles forming the outer layer.

If moisture is permitted to accumulate. under the shingles, the nails holding the shingles become rusted and the moisture may pass around the nails and through the roof into the building. By positioning the spacers in the location shown, the moisture will not accumulate under the shingles but will pass around the spacers and out from beneath the shingles through the spaces 5- at either side of .the disks. After the disks have been inserted at all the necessary locations, the roof is then coated with a bituminous compound usually employed for the purpose.

While the coating is still soft, a-layer of mineral particles 6 is applied to the outer surface by discharging the particles from a tool such as that described in a copending application filed of even date herewith. By the forcible discharge of the particles from the tool, the particles are embedded in the bituminous coating and caused to adhere thereto. These particles may be suitably colored to provide the roof with a finished appearance. The bituminous compound is of such aiconsistency that itwill conform to the contour of the shingles and maintain the original pattern. The spaces beneath the lower edges of the shingles prevent the complete sealing of the lower edges and provide passages through which any moisture entering between the shingles of the outer layer and the inner layer'at the edges of the former may escape. This step of waterproofing a roof reconditioned by the method described in the application, Serial No. 194,261 filed March 7, 1938,

has been found very essential due to the fact that it is virtually impossibleto obtain a perfect seal along all the side edges of each of the shingles.

In Fig. 7, there has been shown a modified step of providing the openings at the lower edges of the shingles. Contrary to the mehod above described, the spaces in the modified method are formed after the roof has been resurfaced. In carrying out the modified method, a blunt pointed instrument 1 is forced through the seal at the lower edge of each of the shingles. In forcing the tool 1 through the seal, a few of the mineral gran- ,ules are caused to be positioned under the shingles. These granules hold the shingles in an elevated position and provide apassage through which the moisture entering as above set forth may escape.

It is obvious that-either of the methods described may be employed to produce satisfactory results. I

What is believed to be new is set forth in the following claims:

1. The method of reconditioning shingled surfaces which comprises the steps of positioning a spacer under the outer layer of shingles at the center of the lower edge thereof, applying a coating of. a bituminous compound to the exposed surfaces of said shingles, and, while the coating is in a tacky condition, forcibly embedding alayer of finely divided mineral material therein.

2. The method of reconditioning shingled surfaces which comprises the steps of positioning a thin flat disk under the outer layer of shingles at the center of the lower edge thereof, applying a coating of a bituminous compound to the exposed surfaces of said shingles, and then applying a layer of finely divided solid material to said coating while it is still tacky.

3. The method of reconditioning shingled surfaces which comprises the steps of raising the lower edge of the outer layer of shingles, positioning a spacer between the center of the lower edge of the raised shingles and the under layer to provide a-slight gap, applying a coating of a bituminous compound to the exposed surfaces of the outer layer of said shingles, and then embedding a layer of granular mineral material in said coating while it is still tacky.

4. In the method of reconditioning shingled surfaces which comprises the steps of applying a bituminous coating to the exposed surfaces of 5. The method orv reconditioning shingled surfaces which comprises the steps of applying a coating of a bituminous compound to the surfaces of the exposed shingles, forcibly embedding in said coating a layer of granulated mineral matter, and raising the center portions of the lower edges of the outer layer of shingles.

6. The method of reconditioning shingled surfaces which comprises the steps of applying a coating of a bituminous compound to the surfaces of the exposed shingles, embedding in said coating a layer of granulated mineral matter, and breaking the seal at the lower edges of the outer layer of shingles by inserting a suitable tool thereunder.

'7. The method of reconditioning shingled surfaces which comprises the steps of inserting spacers between the lower edges of some of the outer shingles and the under layer, coating the exposed surfaces of the outer layer of shingles with a bituminous compound, and embedding a layer of mineral particles in said coating while it is still soft.

8. The method of, providing a drainage vent under a sealed shingle in a shingled roof, which comprises placing a spacing element beneath the shingle at its lower edge to create and maintain a permanent drainage vent for the area below said shingle, and sealing the shingle to adjacent shingles at points other than at said drainage vent; and leaving said drainage vent unsealed.

9. A shingled roof comprising overlapping vent: ed shingles, a portion near the center of the lower edges of said shingles raised above the level of the remainder of said lower edges, said raised portions constituting drainage vents'for the area underneath said shingles, a spacing material of suflicient size and thickness under said raised portions to retain said raised portions in their elevate'd positions and also to maintain said drainage vents open, and the remaining edges of said shingles and the contacting portions of surrounding shingles sealed against water admission between said shingles.

HERBERT w. HUDSON. 

